Takeo Saeki discovers that his wife, Kayako, is having an affair with another man. In his anger, he also convinces himself that their son, Toshio, is not his biological child. Takeo goes insane and brutally murders his wife, child and their cat before hanging himself. As the Japanese urban legend goes, those who die in the grips of terrible rage are bound to continue living in their place of death in eternal torment. Accordingly, the spirits of Taeko, Kayako, and Toshio live on, and their house becomes cursed. All who enter the house fall under the curse and die terrible deaths at the hands of the Saeki spirits.